Crash in dovecot/auth with backtrace

[Ralf Hildebrandt]

I'm seeing this odd crash with "USER\t531\t*@liquid-scan.de\tservice=quota-status"
Which looks like something is being tested against our quota-status --
but I fail to see why an NON LOCAL address is being tested....

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Reading symbols from /usr/local/dovecot-2.2/libexec/dovecot/auth...done.
[New LWP 2289]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".
Core was generated by `dovecot/auth'.
Program terminated with signal 6, Aborted.
#0  0xb7724424 in __kernel_vsyscall ()
#0  0xb7724424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74a0661 in *__GI_raise (sig=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = <optimized out>
        pid = -1218617356
        selftid = 2289
#2  0xb74a3a92 in *__GI_abort () at abort.c:92
        act = {__sigaction_handler = {sa_handler = 0xbfd1c924, 
            sa_sigaction = 0xbfd1c924}, sa_mask = {__val = {3077760610, 
              3218196756, 3076712520, 3218196744, 3077843556, 0, 3074764848, 
              1, 0, 1, 3077716256, 145215752, 1097, 3077184659, 3, 145244200, 
              1, 128, 0, 3218196816, 3218196744, 3218196756, 3218196764, 
              3077716256, 0, 3077194863, 145215720, 3076749582, 3077199789, 
              3077686824, 1097, 3077686824}}, sa_flags = 0, 
          sa_restorer = 0xb76a5c2f <internal_handler+527>}
        sigs = {__val = {32, 0 <repeats 31 times>}}
#3  0xb76a624e in default_fatal_finish (type=<optimized out>, 
    status=status at entry=0) at failures.c:202
        backtrace = 0x8a7c8d8 "/usr/local/dovecot-2.2/lib/dovecot/libdovecot.so.0(+0x7825e) [0xb76a625e] -> /usr/local/dovecot-2.2/lib/dovecot/libdovecot.so.0(+0x782e1) [0xb76a62e1] -> /usr/local/dovecot-2.2/lib/dovecot/libdovecot."...
#4  0xb76a62e1 in i_internal_fatal_handler (ctx=0xbfd1c9f0, 
    format=0x807a0c4 "file %s: line %d (%s): assertion failed: (%s)", 
    args=0xbfd1ca14 "\257j\a\b\371\004") at failures.c:671
        status = 0
#5  0xb76a6e5f in i_panic (
    format=format at entry=0x807a0c4 "file %s: line %d (%s): assertion failed: (%s)") at failures.c:276
        ctx = {type = LOG_TYPE_PANIC, exit_status = 0, timestamp = 0x0, 
          timestamp_usecs = 0}
        args = 0xbfd1ca14 "\257j\a\b\371\004"
#6  0x0805873a in auth_request_set_login_username (request=0x8a945d8, 
    username=0x8a7c548 "", error_r=0xbfd1cad4) at auth-request.c:1273
        master_passdb = <optimized out>
        __FUNCTION__ = "auth_request_set_login_username"
#7  0x08054c44 in master_input_auth_request (conn=conn at entry=0x8aa18b8, 
    args=args at entry=0x8a941c1 "531\t*@liquid-scan.de\tservice=quota-status", 
    cmd=cmd at entry=0x8076925 "USER", request_r=request_r at entry=0xbfd1cad0, 
    error_r=error_r at entry=0xbfd1cad4) at auth-master-connection.c:209
        auth_request = 0x8a945d8
        list = 0x8a7c53c
        name = <optimized out>
        arg = <optimized out>
        username = 0x8a7c504 "*@liquid-scan.de"
        id = 531
#8  0x0805539c in master_input_user (
    args=0x8a941c1 "531\t*@liquid-scan.de\tservice=quota-status", 
    conn=0x8aa18b8) at auth-master-connection.c:306
        auth_request = 0x8a92e70
        error = 0x8ab8e81 "31298"
        ret = <optimized out>
#9  auth_master_input_line (
    line=0x8a941bc "USER\t531\t*@liquid-scan.de\tservice=quota-status", 
    conn=0x8aa18b8) at auth-master-connection.c:615
No locals.
#10 master_input (conn=0x8aa18b8) at auth-master-connection.c:679
        _data_stack_cur_id = 3
        line = <optimized out>
        ret = 40
#11 0xb76baf8b in io_loop_call_io (io=0x8a92ba8) at ioloop.c:501
        ioloop = 0x8a844e8
        t_id = 2
        __FUNCTION__ = "io_loop_call_io"
#12 0xb76bc272 in io_loop_handler_run_internal (ioloop=ioloop at entry=0x8a844e8)
    at ioloop-epoll.c:220
        ctx = 0x8a8b500
        events = 0x8f1
        event = 0x8a8b558
        list = 0x8a92be0
        io = <optimized out>
        tv = {tv_sec = 0, tv_usec = 999856}
        events_count = <error reading variable events_count (Could not find type for DW_OP_GNU_const_type)>
        msecs = <optimized out>
        ret = 3
        i = <optimized out>
        j = <optimized out>
        call = <optimized out>
        __FUNCTION__ = "io_loop_handler_run_internal"
#13 0xb76bb01c in io_loop_handler_run (ioloop=ioloop at entry=0x8a844e8)
    at ioloop.c:548
No locals.
#14 0xb76bb0a8 in io_loop_run (ioloop=0x8a844e8) at ioloop.c:525
        __FUNCTION__ = "io_loop_run"
#15 0xb76527ae in master_service_run (service=0x8a84418, 
    callback=0x8063df0 <client_connected>) at master-service.c:569
No locals.
#16 0x08064490 in main (argc=1, argv=0x8a841e0) at main.c:393
        c = <optimized out>

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de